We just ended our first season and covered the RPOD for the winter.  We bought this cover on Amazon months ago and it fits the 180/179 perfectly.  It fits over the antenna, a/c unit and the Thule awning. One person can do it with a 5 foot ladder and a broom.  Just put the rolled up cover on the roof and roll it out to the rear and use the broom to push it out to the sides.  Then move the ladder around and pull down the sides.  It has a door that lines up so you still have access inside so that we can winterize it later.  Its a little thin (you can still see the RPOD logo on the front through it) but that makes it light to maneuver around.  Even if it lasts two winters it is worth the money.
This is it:

Classic Accessories OverDrive PermaPRO Deluxe R-Pod Cover, Fits up to 20' long Trailers - Lightweight Ripstop Fabric with RV Cover (80-257-171001-00)

I got the same cover. Looks like a good quality product. Time will tell

I bought the exact same cover from Amazon and just put it on yesterday. My only concern is the somewhat loose fit despite using both straps, there are still plenty of loose spots for the wind to get under the cover, also not sure if I like the cover over the fenders as it creates another wind trap. I don't have the Hood River addition so the cover covers half of the wheels. I'm considering rolling it up and tying it so the fender is exposed. I don't want to run extra straps as I believe it is beneficial not to have the cover pressed hard against the top and sides. Opinions?

I also see feedback and reviews about the super light weight, I think that is an asset as it is better than a heavy, rough material pressed against the top, or slapping in the wind. Makes for easier use as well.

Be sure to check for the less obvious puncture points, I have cut up pool noodles on the bottom edges of the fenders, and on the frame at the front corners which are fairly sharp.


  

I am also on my second cover.  The first one developed holes where the gutters are on my slide out and at the end of the track that the R Dome slides into.  Since the first was under warranty, Classic Accessories sent the second one free of charge.  I tried the pool noodle thing w/ the first cover but they had a tendency to fall off so what I did w/ this one is to locate the spots likely to wear out (experience from first cover) and put a layer of gorilla tape on the inside of the cover in those areas.  I also put some tape on those sharp edges trying to blunt the roughness.  Will see how this cover holds up over the winter.  Time will tell.